公开(公告)号：US09597830B2

公开(公告)日：2017-03-21

申请号：US14434915

申请日：2013-03-29

Applicant: LG ELECTRONICS INC.

Inventor： Junseok Lee ,  Sumin Lee

IPC: B29C44/22 ,  D01D5/08 ,  D01D5/24 ,  D01D5/247 ,  D01F6/48 ,  B29C47/00 ,  B01D67/00 ,  B01D69/12 ,  B01D69/08 ,  B01D69/02 ,  B01D71/34 ,  B29K27/00 ,  B29L23/00 ,  B29L31/00

CPC classification number: B29C47/0023 ,  B01D67/0006 ,  B01D67/0016 ,  B01D69/02 ,  B01D69/08 ,  B01D69/087 ,  B01D69/125 ,  B01D71/34 ,  B01D2323/02 ,  B01D2325/36 ,  B29C47/0057 ,  B29C47/0066 ,  B29K2027/16 ,  B29L2023/003 ,  B29L2031/755

Abstract: The present invention relates to a method of manufacturing a hydrophilized hollow fiber membrane by a continuous process using an extruder. According to the method of the present invention, thermal curing agent in the form of a monomer or a oligomer is added to a polymer solution, and in the melt state before a separation membrane is manufactured, thermal polymerization occurs due to an initial reaction of a thermal initiator at the appropriate temperature within a cylinder of the extruder. Thus, a hydrophilic component is evenly distributed into the membrane at the micro-level, and the hydrophilic component is not washed out, resulting in very high stability. Another advantage is high economic value and efficiency because the process for hydrophilizing the membrane as well as the process for manufacturing the membrane is carried out by the continuous process using the extruder without using conventional extrusion equipment in the form of an agitator.

公开(公告)号：US20150266222A1

公开(公告)日：2015-09-24

申请号：US14434915

申请日：2013-03-29

Applicant: LG ELECTRONICS INC.

Inventor： Junseok Lee ,  Sumin Lee

IPC: B29C47/00

CPC classification number: B29C47/0023 ,  B01D67/0006 ,  B01D67/0016 ,  B01D69/02 ,  B01D69/08 ,  B01D69/087 ,  B01D69/125 ,  B01D71/34 ,  B01D2323/02 ,  B01D2325/36 ,  B29C47/0057 ,  B29C47/0066 ,  B29K2027/16 ,  B29L2023/003 ,  B29L2031/755

Abstract: The present invention relates to a method of manufacturing a hydrophilized hollow fiber membrane by a continuous process using an extruder. According to the method of the present invention, thermal curing agent in the form of a monomer or a oligomer is added to a polymer solution, and in the melt state before a separation membrane is manufactured, thermal polymerization occurs due to an initial reaction of a thermal initiator at the appropriate temperature within a cylinder of the extruder. Thus, a hydrophilic component is evenly distributed into the membrane at the micro-level, and the hydrophilic component is not washed out, resulting in very high stability. Another advantage is high economic value and efficiency because the process for hydrophilizing the membrane as well as the process for manufacturing the membrane is carried out by the continuous process using the extruder without using conventional extrusion equipment in the form of an agitator.

Abstract translation: 本发明涉及通过使用挤出机的连续方法制造亲水化中空纤维膜的方法。 根据本发明的方法，将单体或低聚物形式的热固化剂加入到聚合物溶液中，并且在制造分离膜之前处于熔融状态，由于初始反应产生热聚合 热引发剂在挤出机的圆筒内的适当温度下。 因此，亲水性成分在微量级均匀地分布在膜中，并且亲水性成分不被洗掉，导致非常高的稳定性。 另一个优点是具有高的经济价值和效率，因为用于亲水化膜的方法以及制造膜的方法是通过使用挤出机的连续方法进行的，而不使用搅拌器形式的常规挤出设备。

公开(公告)号：US20220302555A1

公开(公告)日：2022-09-22

申请号：US17646925

申请日：2022-01-04

Applicant: LG ELECTRONICS INC.

Inventor： Dongwook Lee ,  Munhyuk Lim ,  Hongjung Kim ,  Kyungho Jung ,  Juchul Lee ,  Junhan Kwon ,  Keeyong Kim ,  Sumin Lee ,  Yongkeon Ahn ,  Youngmin Pi

IPC: H01M50/429 ,  H01M50/44 ,  H01M50/403 ,  H01M50/446

Abstract: Disclosed are a separator for a lithium ion secondary battery, a method for producing the same, and a secondary battery using the same. A separator structure includes a support disposed inside a secondary battery. The support includes a porous polymer matrix, cellulose nano fibers dispersed in the matrix, and inorganic additives dispersed in the matrix, wherein at least some of the inorganic additives are attached to the cellulose nano fibers and are distributed in the matrix.

公开(公告)号：US09610545B2

公开(公告)日：2017-04-04

申请号：US14418708

申请日：2013-03-29

Applicant: LG ELECTRONICS INC.

Inventor： Junseok Lee ,  Sumin Lee ,  Hyunhwan Oh ,  Changho Lee ,  Minjoung Kim

IPC: B01D33/21 ,  B01D39/00 ,  B01D67/00 ,  B01D69/08 ,  B01D71/34 ,  D01D5/247 ,  D01F6/12 ,  B01D69/02

CPC classification number: B01D69/08 ,  B01D69/02 ,  B01D69/087 ,  B01D71/34 ,  B01D2323/08 ,  B01D2325/02 ,  B01D2325/026 ,  B01D2325/30 ,  D01D5/247 ,  D01F6/12

Abstract: The present invention relates to a hollow-fibre membrane having a novel structure and to a production method therefor. The hollow-fibre separation membrane of the present invention has an outermost shell surface pore size of between 0.001 and 0.05 μm and a mean pore size of between 0.01 and 0.1 μm while having, in sequence from the outermost shell surface, a dense sponge structure, a finger-like sponge structure and a mixed sponge-bead structure; and, because of this specific triple structure, the invention has outstanding mechanical strength, porosity and water permeability alike while also having a high performance whereby it is possible to eliminate even viruses.

公开(公告)号：US20150202576A1

公开(公告)日：2015-07-23

申请号：US14418708

申请日：2013-03-29

Applicant: LG ELECTRONICS INC.

Inventor： Junseok Lee ,  Sumin Lee ,  Hyunhwan Oh ,  Changho Lee ,  Minjoung Kim

IPC: B01D69/08 ,  B01D69/02 ,  B01D71/34

CPC classification number: B01D69/08 ,  B01D69/02 ,  B01D69/087 ,  B01D71/34 ,  B01D2323/08 ,  B01D2325/02 ,  B01D2325/026 ,  B01D2325/30 ,  D01D5/247 ,  D01F6/12

Abstract: The present invention relates to a hollow-fibre membrane having a novel structure and to a production method therefor. The hollow-fibre separation membrane of the present invention has an outermost shell surface pore size of between 0.001 and 0.05 μm and a mean pore size of between 0.01 and 0.1 μm while having, in sequence from the outermost shell surface, a dense sponge structure, a finger-like sponge structure and a mixed sponge-bead structure; and, because of this specific triple structure, the invention has outstanding mechanical strength, porosity and water permeability alike while also having a high performance whereby it is possible to eliminate even viruses.

Abstract translation: 本发明涉及具有新颖结构的中空纤维膜及其制造方法。 本发明的中空纤维分离膜的最外壳表面孔径为0.001〜0.05μm，平均孔径为0.01〜0.1μm，同时从最外层的表面依次具有致密的海绵结构， 指状海绵结构和混合海绵珠结构; 并且由于这种特定的三重结构，本发明具有优异的机械强度，孔隙率和水渗透性，同时也具有高性能，从而可以消除甚至病毒。